Export Video crashes for WebM

[Yury Voronov]

This is regarding OpenShot v1.3.0 under Ubuntu 11.04, installed from Ubuntu repository, as well as FFmpeg v0.6.2.

I have a project and I started to export video with the following settings:
Profile: Square NTSC Widescreen (854x480, 30p)
Video: format - webm, codec - libvpx, bit Rate - 15 Mb/s
Audio: codec - libmp3lame, sample rate - 44100, channels - 2, bit rate 192 kb/s

OpenShot crashes immediately at the beginning of encoding with 'Floating point exception'.

[Andy Finch (fincha)]

Can I suggest you try what is mentioned in the link below, to ensure your base system will encode to webm?

http://blog.pcode.nl/2010/10/17/encoding-webm-using-ffmpeg/

[Yury Voronov (yurvor)]

Yes, it works. I used both commands as stated, and ffmpeg have done its job nicely.

[Andy Finch (fincha)]

The problem here is that you were using libmp3lame as the audio codec - WebM only supports libvorbis for audio. By using an unsupported codec, ffmpeg has crashed, which in turn crashed Openshot. We are not able to catch any crashes in ffmpeg/MLT before they crash Openshot, so I have added some validation to force the correct codecs for WebM i case they are changed by the user.

The best option is to use the WebM profile under All Formats in the Simple export tab.